| (19) |
 |
|
(11) |
EP 0 358 457 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
27.03.1991 Bulletin 1991/13 |
| (43) |
Date of publication A2: |
|
14.03.1990 Bulletin 1990/11 |
| (22) |
Date of filing: 05.09.1989 |
|
| (51) |
International Patent Classification (IPC)5: C08F 38/00 |
|
| (84) |
Designated Contracting States: |
|
DE GB |
| (30) |
Priority: |
05.09.1988 JP 221712/88
|
| (71) |
Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
|
Kadoma-shi,
Osaka-fu, 571 (JP) |
|
| (72) |
Inventors: |
|
- Waragai, Katsunori
Kawasaki (JP)
- Saito, Yukihiro
Kawasaki-ku
Kawasaki (JP)
- Asakawa, Shiro
Machida-shi
Tokyo (JP)
|
| (74) |
Representative: Myerscough, Philip Boyd (GB) et al |
|
J.A. Kemp & Co.
14 South Square, Gray's Inn
GB-London WC1R 5EU
GB-London WC1R 5EU (GB) |
|
| |
|
| (54) |
Process for the preparation of 1-monoalkyldimethylsilyl-propyne polymers |
(57) A process for the preparation of 1-monoalkyl(C₁ -C₄)dimethylsilyl-1-propyne polymers
which comprises polymerizing a 1-monoalkyl(C₁ - C₄)dimethylsilyl-1-propyne monomer
in the presence of a compound of a transition metal and a member selected from α,ω-dihydropolydialkylsiloxanes
and polyalkyldihydrosiloxanes in a solvent inert for the polymerization. The polymerization
reaction proceeds at low temperatures in an efficient manner. The membrane of the
resultant polymer has a high gas transmission and suffers little degradation when
placed under severe temperature conditions.